Study on the Response of Soil Nutrient Content to Soil Loss in Karst Sloping,Land of Southwest China

• 作者: HE xun-yang HU Ning HUANG Yun-xiang XIE Hong-xia YUAN Hong ZHANG Yang-zhu
• 来源期刊: 气象与环境研究：英文版
• 学科: 农学
• 关键词: 土壤养分含量 中国西南地区 土壤流失 坡地 岩溶 土地 喀斯特山区 化学性质
• 年，卷（期）: 2012,（3）
• 页码范围: 46-48
• 页数: 3页
• 分类号: S158.3

摘要

[Objective]The study aimed to analyze the response of soil nutrient content to soil loss in karst sloping land of Southwest China.[Method]Choosing a karst sloping land in Nanchuan,Chongqing City as a sampling area,we analyzed the basic physical and chemical properties of soils at different sampling points,as well as the movement of Mg,Cu,Zn,Mg,Mo and Mn in the soils.[Result]In the sloping land,there was a varying decrease in the content of all soil nutrients from the top to the bottom,but there was no obvious deposit at the bottom.In addition,Mg,Cu,Zn,Mg,Mo and Mn content had clear inflections in the sloping land,and these inflections mainly appeared at 15-25 m.It proved that both surface soil erosion and underground soil leaching occurred at the same time in the karst sloping land.[Conclusion]The research could provide scientific references for the restoration of ecosystem in karst mountainous areas.